• Hwankyungkyoyuk
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• v.10 no.2
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• pp.133-144
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• 1997

Environmental education in Korea has been emphasized since the Fourth National Curriculum. The Environment curriculum became independent as 'Environment' for middle school and 'Environmental Science' for high school were set as independent subjects upon the Sixth National Curriculum of Korea. And the Enviroment Textbook for middle school was published by the Ministry of Education of Korea. The purpose of this study is to analyze environment textbook for middle school focusing on the organization, the format, questions and illustrations. It was expected that the results of this study could be used by Environment textbook developers. According to the analysis of 'Environment',on the organization, the textbook was consisted of 219 pages and 22 units. A unit was consisted of many subunits and activities. On the content of the textbook, the objectives of subunits stressed more on explanation form than on exemplification form. On the questions, most of them were in <activities> and the objectives of questions stressed on the presentation of the contents. The specific aspect referring results, cause, and judgement, etc. were vary rarely checked. The questions seemed as good, because questions were mostly pertinent to the what to ask, and had a good connection to the main text. By the analysis of illustration, illustrations were mostly functioned as supportive and rarely as decorative, Most of them were photographs and printed all in black-and-white pictures.

• Journal of the Korean Society for Environmental Technology
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• v.19 no.6
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• pp.586-599
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• 2018

To learn about the discharge facility management of industrial complexes and the discharge characteristics of water pollutants in drainage, 11 sites were selected, including 16 discharge companies of Hanam Industrial Complex and High-Tech Scientific Industrial Complex and 4 drainages of the industrial complexes. Through the analysis, it was found that 12(75 %) of the 16 discharge companies had specific hazardous substances other than those registered at the time of installation and registration of the wastewater discharge facilities. In terms of other pollutants, 11 of the 16 companies(about 69 %) were found to have pollution items that differed from those included in approved and reported items lists. In addition, Formaldehyde, Mn, Zn, and Ba were discharged from 11 out of the 16 companies. Significantly, one of the specific hazardous water pollutants, Cu, was detected in all discharge facilities at levels from 0.029 to 0.929 mg/L. Even in major complexes drainages and the main stream of the Yeongsangang. As, Dichloromethane, and Chloroform were detected. However, it cannot be conclusively claimed that it is probable that these substances were actually discharged from the above facilities because research was only done in a limited range(Class 1 to Class 3), and therefore, further research is required. In the future, it will be necessary to expand the research scope of the discharge companies in order to establish a database of water pollutants, and to improve permits and reported items based on discharged substances.

• Journal of the Korean Society of Industry Convergence
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• v.27 no.3
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• pp.675-684
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• 2024

The purpose of the study is to determine the relationship between the infection control organizational culture, infection prevention environment, and infection control performance of nurses at a children's hospital and to identify factors affecting infection control performance. The subjects of the study were 160 nurses from five children's hospitals, and data collection was conducted from February 19 to 29, 2024. Data analysis was performed using frequency, percentage, mean, standard deviation, and difference analysis of variables using t-test, ANOVA, Pearson's correlation analysis, and multiple regression analysis. As a result of the study, infection control performance was positively correlated with infection control organizational culture (r= .610, p< .001) and infection prevention environment (r= .586, p< .001), and as a result of multiple regression analysis, infection control organization The influencing factors appeared in the following order: culture (β= .369), infection prevention environment (β= .312), medical institution accreditation evaluation experience (β= .165), and infection control education experience (β= .137), and the overall explanatory power was It was 50.8% (F=41.966, p< .001). Based on the results of this study, to carry out infection control in children's hospitals, integrated management including the will and effort of individual nurses, support and policy from medical institutions and the government is needed, and the development of an infection control education program that takes into account the special characteristics of children's hospital nurses. Application is necessary.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.5
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• pp.1117-1124
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• 2015

This paper explains a web session management system for mobile web environment with BYOD(Bring Your Own Device). This system operates by enhanced secure session token. This system consists of an unique identifier, time stamp, and encryption algorithm. The Unique identifier in this system classifies each mobile device for web security based on mobile environment with BYOD. And the Time stamp in this system that determine session effectiveness for web security. Also the Cipher algorithm in this system that protects session token information for web security. This paper analysis a security of session management system running on mobile web environment using the simulation techniques. The proposed method is more suitable than the other methods under enviroment mobile web environment with BYOD.

• Parasites, Hosts and Diseases
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• v.39 no.4
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• pp.301-306
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• 2001

A total of 827 malaria cases were reported in the Gangwon-do in the year 2000. There were 18.2 cases per 100,000 inhabitants. There were 283 cases among civilians and 544 cases among the military. 90.6% of cases were reported in Cheorwon-(531), Hwacheon- (152), and Goseong- (66) gun (county), which bordered the demilitarized zone (DMZ). A distinct feature pertaining to the malaria cases in Gangwon-do is that the number of cases has increased about two times over the last year. The mean time from the beginning of symptoms to malaria diagnosis was five days. Control systems for malaria by public health organizations and military organizations are well maintained , but were not able to reduce the malaria prevalence rate. The cause for the increase in pattern of the malaria cases in Gangwon-do may be caused by the spreading of prevalent areas of malaria to the east. Continuous endeavor such as early detection of cases, early treatment, education on clinical symptoms and prevention of mosquito bites with repellent and mosquito nets will help to reduce the infection rate of malaria in Gangwon-do.

• The Transactions of the Korea Information Processing Society
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• v.7 no.10
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• pp.3075-3085
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• 2000

According to distributed, large-caled environment of software development and operation, the elicitation and specivication of correct and complete requrement is the most important factor for the system. In addition contiuous and dramatic systerm canging requests in cooperative environment with internet require more efficient, requirement management. In this paper we detine the specification architecture and techruques for requrements, so that we improve the efficiency ofnatural language-based requirement speciticationand management in a cooperatie work environment. Also, we propose a software requirement engineering process model and environment based on requirements in a CSC@(Computer Supported Cjooperative Work) environment, therefore transfer them into analysis phase.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.08a
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• pp.141-141
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• 2012

The electronic and optical properties of Indium Zinc Tin Oxide (IZTO) thin films using gas environment were investigated by X-ray photoelectron spectroscopy (XPS) and reflection electron energy loss spectroscopy (REELS). REELS spectra revealed that the band gaps of IZTO thin films are 3.26, 3.07, and 3.46 eV for water mixed with oxygen, argon mixed with oxygen, and air environments, respectively. The measured band gaps by REELS are consistent with the optical band gaps obtained by UV-Spectrometer. The optical properties represented by the dielectric function $\mathfrak{m}$, the refractive index n, the extinction coefficient k, and the transmission coefficient T of the IZTO thin films with different gas environments were determined from a quantitative analysis of REELS spectra. The calculated transmission from quantitative analysis of REELS spectra shows good agreement with transmission measured by UV-spectrometer. The transmission values of 89% and low electrical resistivity of $3.55{\times}10^{-3}{\Omega}{\cdot}cm$ have been achieved for argon mixed with oxygen which indicates that the gas enviroment plays an important role in improving the electronic and optical properties of films.

• Economic and Environmental Geology
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• v.18 no.1
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• pp.55-63
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• 1985

Studies based on field observation and laboratory analysis of the littoral sands of beaches in Jeju Island indicate that the shores exhibit a great variation in both the beach geometry and the composition in terms of geological agents. Most of the beaches around the Island are developed in relatively small patches and discontinuous, as the result of intervening sea cliffs and rocky headlands. The sand quality and the dimensions of the beaches in the Island are relatively poor; for example, these beaches are 220~2,780m in length, 41~313m in width, and $7^{\circ}$ steepness in average foreshore slope. According to the textural parameters analysis, the beach sediments in study portion shows medium grained ($average\;1.42{\phi}$), moderately well sorted ($average\;0.65{\phi}$) and negative skewed ($average\;0.34{\phi}$), which seems to reflecting a high energy marine depositional environment. The heavy and light minerals of te beach sediments are composed of quartz, volcanic fragments, Na-Ca feldspar, olivine, augite as major constituents, along with apatite, biotite and other minor components, which originates from the adjacent geology. The content of CaO-MgO in shell fragments of the littoral sands ranged from 4.69~51.96%, suggesting that the high CaO-MgO content in some of the Island's beaches is attributable to geologic environments conducive to the growth of shell organisms and sediments migration. The provenance of the sediments studied are derived predominantly from adjacent continental shelves and/or terrigenous older river portion, Which sediments were transported mostly by rolling or bottom suspension. The depositional environments of the Jeju beaches can be divided into two types: beaches distributed in the North and the Northeastern parts of the Island are dominated by marine enviroment, whereas beaches in the Southwestern portion are characterized by terrigenous agencies.

• Journal of the Korean Institute of Gas
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• v.26 no.4
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• pp.18-26
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• 2022

The Korean government is conducting heat-using equipment(industrial boiler) inspection in accordance with the Energy Use Rationalization Act because of the heat-using equipment(industrial boiler)'s risks such as explosion and fire, and safe use and management. This paper aimed to setup the safe and performance vulnerabilities from database based on the inspection results for heat-using equipment(industrial boiler). This study surveyed the inspection results of 1,249 heat-using equipment(industrial boiler) which were failed inspection of heat-using equipment(industrial boiler) from january 2016 to december 2020. And the analysis method is to inform safety and performance vulnerability categories of heat-using equipment(industrial boiler) by statistically analyzing the failure reasons of boiler type and inspection type which are high variance in failure rate. The safety and performance vulnerability categories was abbreviated into 18 cases. And each catagory's main reason for failure was suggested by additional analyzing the opinions of inspectors. This paper would be the basic source and the comprehensive information dealing with the safety and performance vulnerability of heat-using equipment(industrial boiler).

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.48 no.1
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• pp.127-133
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• 2016

This study is performed that furniture and interior materials of MDF's (Medium Density Fiberboard) biodegradation properties, and the goal of this study is investigation of possibility of waste-MDF's composting after landfilling. To investigate biodegradation, this study was performed according to KS M ISO 14855-1, and there were two different soil conditions including a compost condition and an activated vermiculite condition as artificial soil. This experiment was tested for 40 days. The measurement of carbon-dioxide generation was processed every 24 hour in 1-2 week, and every 48 hour after 3 week. In the same days, MDF showed 24.4% of biodegradation in compost condition, and 6.2% in activated vermiculite. Also, the reference material of TLC (thin-layer chromatography) grade cellulose showed 26.4%, 11.4% in compost and activated vermiculite respectively. The dilution plate method was performed for biological analysis in the study. This experiment was used for investigation of inoculum's (Bacillus licheniformis) activity. As the result of bioassay, compost has more other germs include inoculum than activated vermiculite in the first week. Especially in the 2nd week, the reference material under the compost condition showed the most germ's activity, and also the biodegradation was the highest. Consequentially, compost condition was able to reduce a performing period of biodegradation testing than activated vermiculite. However, activated vermiculite could be stabilizing errors between repetition.